Celsius Review
- Does This Energy Drink Work?

This week, I obsessed over every aspect of the weight-loss drink Celsius, so we examined the ingredients, side effects, clinical research and quality of customer service. We scoured hundreds of consumer comments and reviews. We then refined and summarized to give you the info you need.

EDITOR'S TIP:Click here to substitute Celsius with a proven fat burner such as Leptigen for better results. Take advantage of the top weight-loss offer of 2016, a Free Leptigen Sample Kit

What is Celsius?

To start off with, Celsius is a weight-loss and energy drink that has green tea, [1] guarana seed extract, [2] ginger root, B-vitamins [3] and chromium [4]. When you consume one per day, it will supposedly helps you increase energy. A benefit is you can consume it on the go.

The product, introduced in 2004, uses some natural ingredients, which is a good choice. You can buy the drink at retail stores, but you can’t order it from the official website. We like that there are some people who’ve had positive experiences and the company has been around a while, but read on…

Celsius Side Effects – “Feeling a Bit Shaky?”

The first concern we have involves Celsius side effects, which may include jitteriness and stomach concerns. [5] “Energy drinks contain stimulants, that’s often the nature of the formula,” said our Research Editor. “It’s how much is included that can mean the difference between a good punch and a jolt that doesn’t feel so positive.”

“Once I drank Celsius, I immediately felt jittery which I felt was odd,” said a consumer of Celsius ingredients.

“I was suffering headaches, muscle twitches and even a flutter in my chest,” reported another.

Side effects are different from one person to the next. According to one dieter, “I have no shaky after effects, no queasy stomach.”

We also found one that said, “Tastes nice and does not make you jittery.”

Scroll below for one of the best products we’ve seen over the last year.

Celsius Taste – “Not What Was Expected”

According to some customer comments, the taste of Celsius wasn’t right. Some commented that the beverage tasted flat. “To me it tasted flat and artificial and all around not good,” said a customer.

“This tastes nothing like mango or peach (not to us). I can’t even describe the taste,” explains a dieter.

“So nasty tasting had to dump the majority of the cans down the sink,” commented a user.

Products like Celsius will always have some consumers who like them and some who don’t. One person who had a positive experience said, “It tasted kind of weird at first but I got used to it real quick and now I look forward to drinking them.”

Another shared, “It has a good taste and helps to boost your energy.”

Our research shows it takes just a small part of a weight-loss program, like side effects, to hamper chances of long-term success. If Celsius leaves dieters feeling jittery, they may not continue using the product.

The Science – “Clinical Evidence?”

There are links to clinical studies supporting certain claims made by Celsius. What interested us the most was the “Weight Loss Effect in Overweight Women” paper. This one doesn’t come with a link to the journal where it was published. Even better is the participants “reported to a training facility” on workout days. The average dieter doesn’t have access to this type of exercise routine. The science is lacking with Celsius and at DietSpotlight that’s what’s most important. If there’s no proof a product works, there’s no real reason to spend the money.

The Bottom Line – Does Celsius Work?

Well now, the verdict is in on Celsius, so what did we find? There are positives, including a few good customer comments and the fact that it has natural ingredients, but we have some reservations because the research performed was not realistic for the average dieter. We are also concerned about potential side effects and bad taste.

If you’d like to slim that waistline, we recommend going with a product that with ingredients backed by published clinical studies that aren’t there to make you feel worse for the wear.

Among the best products we’ve seen in 2016 is one called Leptigen. The formula consists of a four-ingredient proprietary blend, shown in published scientific research to help ignite fat loss and enhance metabolism. We found no mention of adverse side effects and customer reviews report excellent results.

Additionally, the makers of Leptigen have confidence in the product so they’re offering a Special Trial Offer, quite a benefit.

Summer Banks is an ISSA-Certified Fitness Nutrition Specialist and has reviewed over 2000 diet products. She has years of nursing training, experience as a manager responsible for 15 supplement brands, and completed coursework on Food and Nutrition from Stanford University. full bio.

How Does Celsius Compare?

Previous Celsius Review (Updated August 25, 2014):

What You Should Know - Celsius

Celsius is an energy drink that claims to raise metabolism by up to 12% and boost energy levels for 3 hours with their natural, smooth blend of antioxidant rich ingredients, including Green Tea Extract, Biotin, Guarana Seed, and Calcium. Sold in popular store such as Kroger's and Walgreens, Celsius touts itself as a cheap, flavored drink that claims to keep dieters alert, focused, and slim by burning 100 calories per bottle. Though it does not claim to be a diet supplement, it does claim to be the perfect drink for boosting energy levels during the day.
Although a diet is the best way to boost the metabolism and stay alert, turning to an energy drink may help dieters when energy levels are running low. It is vitally important that they pick the right drink with provable benefits, however, and an affordable price tag. Celsius may deliver on some key points.

Ingredients in Celsius

Product Features

Celsius focuses on including natural ingredients instead of synthetic ingredients, and some ingredients may legitimately boost energy levels. Green Tea Leaf Extract and Guarana Seed are both sources of caffeine, and the type of caffeine contained in both sources is scientifically-proven to be gentler than straight Caffeine. This type of caffeine stimulates the central nervous syndrome to halt fatigue and causes a less harmful "energy crash" when the effect wears off. Green Tea Extract also contains chemicals that stimulate the metabolism, and sipping two or more cups of this tea may result in increased metabolism. This may be the source of Celsius's claim that it may stimulate the metabolism.
Celsius's other ingredients do not contain any provable dietary benefits, but it may provide nutritional benefits. Calcium is important in any diet and some studies show it may help dieters lose weight, but it is best digested from natural, organic forms, such as yogurt or milk.
It does appear Celsius does contain some ingredients which may boost energy levels and the metabolism, but all sources have a better effect if taken in natural form. Green Tea tends to work the best in its natural form, for example, and its extract form is notably less effective.

Advantages

Contains Green Tea Extract, which may increase the metabolism in larger doses.

Contains natural ingredients which do not have any major side effects.

Disadvantages

Ingredients have more potency in natural, non-extract form.

Its main ingredients do not have any notable dietary benefits.

Not intended for use as a diet supplement.

May cause jitters and trouble concentrating. (See reader comments.)

Conclusion About Celsius

Celsius is a natural drink that claims to boost the metabolism and energy, and its ingredients may contain some of these properties. Depending on a diet drink to help boost these levels may become addictive, however, and obtaining these benefits from natural sources may offer stronger results.

Celsius Questions & Answers:

We looked at hundreds of user comments about Celsius to create this helpful FAQ.

What are the side effects of Celsius?

Celsius side effects, according to customer comments, may include feeling jittery, heart palpitations, headaches, and nausea.

There are several positive aspects of Celsius, such as the natural ingredients, like green tea and caffeine [2]. Unfortunately, the company does not offer any clinical research supporting the claims.

How much does a bottle of Celsius cost?

A bottle of Celsius costs about $2 each. You can also purchase a five-pack for $10.99 or a 24-pack for $29.98.

How do you take Celsius?

You take one Celsius per day to boost energy. The company doesn’t offer specific recommendations.

Can I take Celsius if I have a health condition?

Women who are pregnant or nursing, those with health conditions, anyone taking prescription medications or people under 18 years of age should contact a healthcare professional prior to using energy drinks of any kind, including Celsius.

What do users like about Celsius?

Some users like one or more of the drink flavors offered by Celsius, while others felt a boost in their energy levels.

What do users NOT like about Celsius?

The taste of the Celsius drinks was often described in negative terms, making it one of the main reasons consumers stayed away from the products. Other reviewers felt the negative side effects were too much.

Who makes Celsius?

The makers of Celsius is Celsius Holdings.

How do I contact the Celsius customer service department?

You can contact the Celsius customer service department by sending correspondence to Celsius Holdings 2424 North Federal Highway Boca Raton, FL 33431, by using the feedback form on the official website or by calling 1-866-423-5748.

There are high levels of caffeine in the Celsius drinks so it is possible it will make it more difficult for some people to sleep. We read several reviews where people specifically said the drinks seemed to keep them awake at night.

Are the Celsius drinks carbonated?

Yes, some Celsius drinks are carbonated.

Where can I find Celsius?

You can order Celsius from online retailers such as Amazon, and it can be found in many stores.

Does Celsius come with a guarantee?

We were unable to find information on the official website about any guarantees. However, our readers have been going wild over the last few months taking advantage of the Special Trial Offer from Leptigen. Click above to learn more.

Celsius User Tips:

While we were researching these drinks we realized that Celsius drinkers have a lot of strong opinions to share about their experiences. Out of thousands of reviews and comments, we gathered some of the best tips to help you learn more about this product line.

“Simply drinking Celsius will not shed any pounds; it is meant to be a supplement to aid calorie burning.” Jessica

“I always purchase the Green Tea Peach Mango. I think it is the best flavor out of all.” Melanie

“It’s no magic bullet for weight loss, it must be combined with diet and exercise.” James

“I’m not crazy about the taste but this has way more vitamins and minerals than other energy drinks so I kept trying flavors until I found one I like.” Eric

“This has high levels of caffeine so make sure that you can tolerate that much before you drink it.” Katie

“It works pretty good as to the energy part but you need to watch how much you drink. It played havoc with my stomach.” Eddie

“The taste is pretty good and it really gives you a pick up, but you must be careful. It has an enormous amount of caffeine in it.” Debbie

Celsius Side Effects:

In a world of weight-loss supplements it’s easy to think the natural solution is the choice with the least amount of side effects. The truth is every formula is different. Each person reacts in their own way, so while Celsius side effects are relatively rare, that doesn’t mean they don’t happen for some users.

Anxiety

Anxiety is the feeling of nervousness, dread and feeling anxious. You may be restless, have issues with concentration, and in some cases, feel mild to severe jitters. On the physical side, you may feel shortness of breath, sweats, dizziness, or feel pain in the stomach.

What causes anxiety?

Anxiety is caused when there is a malfunction of brain circuits that control fear and other emotions. Anxiety can be a factor of a mental illness, although there are physical triggers as well, such as caffeine intake, stress, or certain medications. [1]

Lightheadedness

Lightheadedness is the unpleasant sensation of feeling faint, or in some cases, dizzy. Episodes of lightheadedness can be short-lived, or ongoing, which could be a cause of a more serious medical condition.

What causes lightheadedness?

Lightheadedness can be caused by a number of factors, all of which are most commonly related to the inner ears or nervous system. A temporary shortage of blood and oxygen to the brain may cause lightheadedness. In these cases, vomiting, diarrhea, or a drop in blood pressure can all contribute.

Headache

A headache is a dull, throbbing, or sharp pain in the head and neck. Headaches are typically categorized as migraines, tension headaches, or cluster headaches and although common, could be the result of a serious underlying medical condition if the symptoms persist.

What causes a headache?

Whenever the nerves or blood vessels around the brain become disrupted, a headache can occur. There are several factors which can trigger a headache, including stress, medications, or eating disorders. In addition, direct trauma to the head or increase in blood pressure could also be a factor.

Diarrhea

Diarrhea is a condition in which three or more loose or watery stool occur in a day. Occasionally occurring in most people, although if symptoms persist this could lead to dehydration. Dehydration, in turn, can cause irritability and stress, which could make the diarrhea worse.

What causes diarrhea?

Diarrhea is most commonly caused by an infection in the intestines. This infection could be brought on by a virus, parasite, or bacteria. Diarrhea is typical with those who suffer from lactose intolerance. Consumption of artificial sweeteners is another trigger of this symptom. [2]

Celsius side effects are very uncommon, but there have been reports of diarrhea, headache, and lightheadedness, among others. In an effort to avoid an adverse reaction it’s always best to consult a physician before taking any supplement. This goes especially for those who are taking prescription medications, have a pre-existing medical condition of any kind, are under the age of 18, or are pregnant or nursing.

Celsius is a drink that is used to increase energy levels and promote weight-loss. Side effects are not common, though we pulled a few quotes from people who unfortunately experienced them.

“Once I drank Celsius, I immediately felt jittery” Maura

“Now when I take it, I get really light headed, unfocused, and riddled with anxiety…Also, wicked headaches.” Kyli

“About 20 minutes after my workout I started getting hot flashes, a sick stomach, and a little light headed.” Sondra

“Now I feel sick, I feel hot, sweaty, and I can barely breathe, I feel light headed even when I am sitting or lying down.” Paloma

“I got home and felt something in my stomach…Then I had very powerful bowel movement.” Betty

“I just drank the sparkling orange without working out and became very sick to my stomach, dizzy, and am experiencing the beginnings of a headache.” Holly

“These did absolutely nothing for me but make me sick I got dizzy and nauseous.” Michelle

“Very bad. Felt jittery 2 hours after [I] consumed it. Felt like I was out of breath and my heart was pumping like crazy.” Chaya

“Once I got a headache and once I got diarrhea, and once I just felt kind of sick.” Rickie

“This stuff is way too strong!! It gave me a headache and bloodshot eyes.” Kristen

Side effects are rare, so that’s why Leptigen has caught our attention. There’s no mention of adverse reactions and customer reviews are showing that dieters are seeing positive changes. Want to learn more? Click above.

Celsius Scientific Abstracts:

Vitamin C

For pancreas, larynx, esophagus, and oral cavity cancer, the evidence for a shielding effect of vitamin C and accompanied components is significant and consistent. For stomach, breast, rectum, and cervix cancer, the evidence is just as strong. An array of lung cancer studies had discovered significant protective activities of vitamin C. It is possible that carotenoids, ascorbic acid and other fruit traits work together. Raising intake of fruits and vegetables are encouraged. [1]

Niacin

Nicotinic acid has been found to have favorable activities toward lipids and lipoproteins, giving it the ablity to become an alternative to fibrates for treating mixed hyperlipidemia patients. Niacin may also be used either by itself or combined with other agents. Niacin has been used in a plethora of different dyslipidemias. There needs to be a larger clinical trial with the inclusion of placebo to completely verify its effects. [2]

Green Tea

Green tea catechins had greatly reduced body weight and had assisted in maintaining body weight following a period of weight-loss (microcirc=-1.31 kg; P<0.001). Suppression of this effect by participants with high habitual caffeine consumption (>300 mg per day) had not achieved significance (microcirc=-0.27 kg for high caffeine intake and microcirc=-1.60 kg for low habitual caffeine consumption; P=0.09). A similar effect was noticed from catechins in Caucasian participants (microcirc=-0.82 kg) when compared to Asians (microcirc=-1.51 kg; P=0.37) but had not been significant enough. Epigallocatechin gallate-caffeine combination had a minor positive effect on weight-loss and weight management. In conclusion, the results had indicated habitual caffeine intake along with ethnicity could all be factors in influencing catechin effects. [3]

Ginger

There has been a very well documented account of ginger and its anti-cancer properties due to its functional ingredients (gingerols, paradols, and shogal) which help prevent a variety of cancers. The study had concluded citing gingers favorable traits, but some ambiguities made the need for further research necessary. [4]

Caffeine

It was found that individuals who consumed a high amount of caffeine experienced weight-loss, fat mass reduction, and waist circumference decrease more so than those who intake low amounts of caffeine. There had been less of a reduction of resting energy expenditure along with reduction of respiratory quotients during weight-loss (p < 0.01). In low caffeine intake individuals, during weight management green tea had still decreased body weight, waist, body fat, and respiratory quotient, and resting energy expenditure had been raised in comparison to the restoration of the variables with placebo (p < 0.01). High caffeine intake users experienced no difference in weight management with intake of green tea. It had been concluded that high caffeine intake was associated with weight-loss via thermogenesis and fat oxidation. [5]

Celsius is a "healthy energy drink" - according to the official website. There are a few stimulating ingredients in the mix, but the main formula is in a proprietary blend. This hides the amount of each ingredient. Celsius states at the bottom of their website that weight-loss will not happen without healthy lifestyle changes.

Research done in Scotland has proved green tea can be quite beneficial for weight-loss. In their study, published in Clinical Nutrition, researchers noted that, “12 weeks of treatment with high-dose green tea extract resulted in significant weight loss, reduced waist circumference, and a consistent decrease in total cholesterol and LDL plasma levels without any side effects or adverse effects in women with central obesity.” [1]

Guarana Seed Extract

Guarana got its name from the infamous Guarani tribe, when they used certain seeds to brew a special drink. Now, the same guarana seeds are still used for medicines.

What Is It Supposed To Do?

Guarana seed extract is used as ailments for many health problems, including low blood pressure, fatigue, pain, heart stress, and more.

Clinical Research

In 2006, a study was published in the European Journal of Medical Research regarding the effects of guarana. In their conclusion, the researchers stated, “A change in some outcome measures like: weight, BMI failed to produce significant difference between groups.” [2] Additionally, this was measured through the use of a supplement containing other herbal supplements.

Ginger Root

Ginger is a plant originating in warmer areas of Asia, Africa, and South America. It is often used as a spice, as well as various medicines in the Middle East.

What Is It Supposed To Do?

Ginger is known to help reduce inflammation and nausea. It has also been marketed as a laxative.

Clinical Research

A recent study was published in the European Journal of Nutrition evaluating the effects of ginger on weight loss. In the conclusion of the article, researchers stated that, “In conclusion, our findings demonstrate a minor beneficial effect of 2g ginger powder supplementation for 12 weeks on weight loss and some metabolic features of obesity.”

Chromium

Chromium is an essential trace mineral founds in various foods and supplements. This should not be confused with hexavalent chromium, which is a known toxin.

What Is It Supposed To Do?

Chromium is thought to help normalize blood sugar levels by controlling the use of insulin in the body.

Clinical Research

In an article from the University of Maryland Medical Center, there is discussion about the possible benefits of chromium in weight-loss, saying, “Studies have been mixed, with some finding that chromium may help people lose weight and build muscle, and others finding it has no effect.”

One that’s caught our eye is one called Leptigen. The clinically-tested ingredients have been shown to work and backed by positive customer feedback. Click above to learn more.

I love this product. I drink it everyday and replaced with starbucks. I love the energy it gives me every sicne my friend showed me this product a a little over a year ago I couldn’t get enough. lose weight, full energy & no complaints.

hey I would love to buy this beverage Celsius but I don’t know where to get it,can you please tell me where to get it now,i m in north west,south Africa,i m not seeing the store around me to buy it, I need it as soon as possible please

I have always wondered about products like this that involve weight loss by boosting metabolism and want to know if it is safe for people with Multiple Endocrine Neoplasia type 2(MEN type 2)to take this or any other of these diet products.

Hey guys! I just wanted to add my bit. I have been drinking Celsius for 6 months. I started drinking it not for the weight loss but because it was a low-cal energy drink with many natural ingredients. I did not like how monster or red bull made me feel. I do not drink everyday just when I need a caffeine boost for work since I work nights. So this drink contains caffeine. Everyone reacts differently to a caffeine boost. Some people are very sensitive caffeine; this is not the drink for you. It also contains green tea which has been researched extensively for weight loss and metabolism. These studies my be where some of the studies are coming from listed on the site as well as some of their own studies.

I have to admit the taste is a little strange but if you have ever tried a pre-workout mix from GNC, it is no worse than that. You get used to it. I also run and have drank Celsius along with my excursion. I think of it like a pre-workout that doesn’t make you feel bloated. If you have used pre-workouts you do it for the energy boost (caffeine), it makes you work harder excersizing than if you didn’t use it.

In Summary, green tea helps your metabolism (in studies proven) and the caffeine makes you work harder when exercising. And it helps, if you want to use it to stay awake. It doesn’t compare with any weight loss regiments but it doesn’t hurt if you can handle a caffeine boost.

I’m not sure at v first I felt energized like 8.5/10 but then idk my stomach started hurting and the taste isn’t all that great I tried it before buying the pack also when I poured it on a glass with ice it looked like stuff was at the bottom of the can

I was so excited to drink Celsius. It has cool name and the can is pretty. I have had 4 cups of coffee everyday for years! Since before my hair turned gray. I had the first can of Celsius and it made me feel young again. I had not had that much energy in a very long time. I never felt old, but at that moment when the energy kicked in I realized I was OLD! Anyways, I cleaned my entire house then went for a run. I had not ran in decades. I passed all these young people breathing heavy and they couldn’t keep up with me. I got home and felt something in my stomach. At first I thought it was one of those aliens that burst out of you like ones in the movies. I was over at my friend Marilyn’s and you never know what she puts in her food. I know she has it out for me. Anyways, I ran to the bathroom. Fast I must add. Then I had very powerful bowel movement. Afterwards I felt lighter than a feather. Here I am, a 70 something year old woman feeling young and skinny. I made myself pretty and went out to a bar. I didn’t know what came over me. This isn’t who I am. I blame Celsius. Celsius made me sleep with Marilyn’s husband. Celsius changed my life. Celsius made me great again (not that I wasn’t always phenomenal before)!

To all of you who day you got adverse reactions, they are all lies. You probably drank 10 cans, sat on the couch, and thought you were going to burn a thousand calories just like that. Im 15 and i am 6’1 and weigh 190 pounds. I go for a 10 mile run every day and i drink about 4 of these cans a day. Of course its going to give you problems if you do nothing after drinking a can. And walking wont cut it either. MODERATE EXERCISE, such as biking uphill or jogging. And i am not the healthiest person, but this stuff isnt bad for you. YOU make it bad for you. If you are an adult who isnt any more then 20 pounds over weight then this is NOT for you. Especcially if you have high blood pressure. This drink was meant for people who already burn 100 calories in about 15 minutes. To increase calorie burn, not initiate it. And you cant be someome who is lazy and doesnt get off the couch, all of a sudden decides to go for a run and tinks one of these. Your body needs to be used to having energy and exercising. All my friends at school tell me that its just another energy drink. And it basically is, but just has some vitamins and is chemical free. This is rediculous. And for people who drink this and have no symptoms, are most likely healthy, and know how to read the back of a can.

Works great and has helped me to lose an extra 5 pounds from the 20 pounds i would have lost from my 2 month diet i do every year. But i am a heavy caffeine user and this gets pretty addicting pretty fast. Even the bad tasting rasberry green tea flavor. But no side affects. I would recommend to anybody looking to drop some extra pounds. AND DO NOT DRINK THIS IF YOURE JUST GOING TO CHUG A WHOLE CAN AND GO SIT ON THE COUCH. THIS IS MEANT TO BE COMBINED WITH MODERATE EXERCISE, LIKE POWER WALKING OR JOGGING.

I was initially thrilled with the energy but then on the third day I felt extremely depressed and had not slept well for the three days I started. On the 4th day after work I experienced a Seizure , was rushed to the ER and so far can not find anything wrong with me. While I have no proof its related I just caution you. I now can not drive and my entire life has changed, it’s just not worth the risk!

I was thinking of buying it this week whenever I can get the chance to get it. I read the positive comments that people wrote about Celsius. I never drank energy drinks like Red Bull before. But I have drank coffee so I know what caffeine is. I always get hyper from drink coffee from Starbucks but there’s no side effects. However, what are the side effect that people get when I read the bad comments of Celsius. I don’t know whether I should buy it. The only reason why I’m curious about Celsius is because of the fact it said weight loss. Does it really help me lose weight? Because I’m overweight and my doctor told me that I’m obese. Can an obese people like me drink Celsius? I’m a beginner at drinking energy drink. Because I don’t drink energy drinks even when I’m at the gym. So I was wondering if Celsius drink is useful and help people like me lose weight. How many calories can you burn when you drink Celsius? How does Celsius work? What time do I drink Celsius? Because I’m immune to things that are harmful to me. I do have allergies reactions to dogs. But I know that I’m not allergic to Celsius because I never tried them. I did heard about a lot of energy drinks my friends kept telling me. But I didn’t try them because I’m not a fan of energy drinks. But I’m a fan of losing weight. I need help with losing weight for the fact that I’m over eating too much. Like I love eating food but sometimes I get hungry every 5 seconds which technically I gain weight a lot. Does drinking Celsius help me lose weight? Like any weight loss program you can suggest for me? I would give this a 5 star if it’s good and if I tried it but in worried about the bad comments that people wrote down here about Celsius so right now I’m debating whether I should by Celsius. What do you think I should do?

As a personal trainer I’m working out constantly and began using Celsius to help with energy lulls. At first, I really liked it while I was working out heavily on a restricted diet. But suddenly now when I take it, I get really light headed, unfocused, and riddled with anxiety. I had to pull off the road today because I started seeing black spots and getting terrible tunnel vision before the onset of an anxiety attack. I had to lay in the Grass and breathe deeply to slow my heart down haha. Probably quite the site to see. So I’d suggest if you are sensitive to similar products, use it sparingly. I think I got too cocky and drank too much too fast. Also, wicked headaches. And I NEVER get headaches. I used to think I was immune to them. Good luck, but be careful.

I am a 66 year old female and drank Celsius during a 10 minute elliptical and 15 min treadmill walking routine in conjunction with light weight activity for 20 min. After the exercise, I noticed black spots in my right eye and light flashes. The ophthamologist said they were floaters and may go away on their own. It has been six months and I still have them. I attribute them to greater eye pressure due to ingredients in Celsius, because I never had them before during physical activity.

i drank Celsius itt was greattttt I rannn soo fast and im 70 . there was a small turtle and I tell ya what he could not catch up to me that sorry sap. I went home felt my tummy rumbling went to the bathroom my god I said alma g you done let the beast and demons our and I tell ya I felt the holy spirit enter my body and yellow out holly luu yaa sweet baby jesus …

I have had 2 celsius drinks so far. One yesterday at about 3pm and one this morning before work. I have thoroughly enjoyed them. I feel like it must have something in it that my body was missing, however I want to limit it to one a day and the energy only last about 3-4 hours. 🙁 As far as some of the negative reviews…It sounds like to me you guys may be having a bad reaction to something in the drink other then the caffeine. Maybe the niacin?

I love this stuff, like a lot of people said energy boost without the jitters, no crash like after redbull (for me). But it is going to be different for everyone. Some people have half a cup of coffee and go through the roof, other’s love their coffee. I’m glad I gave Celsius a try, it rocks my socks.

i have just started trying this drink, but I love it! As far as taste goes, both are great to me but mango peach is better. I find that as I am working out I have a lot more energy, which is great! I can tell that the drink is working, because it makes me sweat a lot more! sweat=burning calories! I am very pleased with this product and recommend it!

In reply to your aspartame rant, i just wanted to point out that the drink has no aspartame in it. Im not affiliated with Celsius im just good at reading labels and research. As an active supplement user and researcher i know that aspartame is used in most diet products and has been proven to have some problems but its not in everything and doesnt automatically give you these health problems. most people that have these problems already had a pre-existing medical condition due to poor diet and lack of excercise. Some people are very sensitve to caffeine and others arent. And to the woman who is 66 and drinking energy drinks…youre 66 – dont drink energy drinks. if youre having problems with energy when you wake up try drinking an 8 ounce glass of water.

Today was my first day to try this. I only bought it for energy for my workout. Coffee was not lasting:( I had a great workout!! I am hoping I can sleep though. If not, will drink half. I do not feel the jitters, my heart may be going a little faster. Will see how this works out. I am leary of energy drinks.But, caffeine is caffeine.

I’m a huge fan of Celsius. I used to drink then before I got prego. the latest watermelon flavor (carbonated) is amazing. I used to drink the non carbonated ones and they work good. I will admit that when I was in a low calorie diet it was best to stay away cause it was to strong but on a hi calorie, it’s in and poppin lol. my husband drinks them almost everyday so we still have them in the house 🙂

I tried the drink earlier when sold in Costco. Loved it!!! Used for about a month. I stopped it later because I was feeling awake even after 3am in the morning. Recently I got few cans to try how it works. But it is giving me adverse effects. I am suffering from insomnia. I was able to sleep when ever i want and whereever I want earlier. But now I was awake more than 36 hours and still going. I am not even nodding off. Caffeine influence varies from person to person and in my whole life I have never had Coffee or Tea.

I am not sure about other effects, but I will have to discontinue!!!!!

Wow, a lot of folks simply can not read a can. No Aspartame is bolded on the can. On the supplement panel 200mg of caffeine ( equivlent 2cups of coffee)No Sugar, No Presevative, or Art colors. I have used it for 2+ years prior to working out due to the very positive clinical studies on this product. No magic here, it is simply helps you reach your goals.

This drink definitely helps me work out longer. I walk/run on my treadmill for 45 minutes everyday. Before I started drinking Celius I would look for every reason in my brain to stop before 45 minutes were over. Now, after drinking Celius about a half hr before, the 45 minutes just fly by. It amazed me from the 1st can I drank. I eat a light lunch, maybe 450 cals, wait about half hr, drink a can and do my workout. Doesn’t keep me awake at night as long as I do it early, but I think working out helps me sleep great anyway. I highly recommend this product.

This drink originally was helping me with my energy then I started getting side effects. Worst, was my lack of concentration and memory loss. I could not do some of my normal daily task. I developed stomach inflammation as well. do not ignore these side effects

My wife and I have both tried this pre-work out (running) and love it. I am not a caffeine user and I’ve had no ill effects. I don’t feel jittery at all and I think it gives me a little more energy and makes running and playing basketball seem a little more effortless, and improves my endurance. I don’t want a pre-workout drink to take over my body, just help a bit when I’m tired, and this fits the bill. I think some of the negative side effects some people are describing are probably from the Taurine, not the caffeine. I won’t be using it every day, but I will buy more.

I love drinking Celsius before a workout. It gives me the energy boost to power through my workouts. It is also the only energy drink i can drink without getting an upset stomach. The taste was hard to get used to but now I love it.

I notice after drinking 1 can of this stuff, that I am able to drive much better. do you all see the same benefits. Also, I am not a professional dancer by any means…but when i put on a pair of tap shoes, I found that I was able to tap dance. How in the heck does this drink work so well????

What? I missed the boat on this one. While you were driving and dancing, I was having bowel movements! Meanwhile these little gray aliens were watching me. I know they were taking bets. They seemed very interested in what I was dropping until the fog hit them. Almost knocked me off my feet too!

I just bought this product at Costco and it was totally misrepresented. I asked about the caffeine content and was told it was only a trace. This has 200 mg per serving. A coke only has 34. VERY SORRY I PURCHASED THE PRODUCT. I WILL TOSS 14 CANS.

I’ve had many different drinks, in the last 10 years, recently (in the last 2 weeks) I have been drinking celsius, I didn’t like the flavor too much,However it gives me an amazing boost of energy in the gym, I jog without feeling tired like I used to for 30 minutes and continue to workout hard pumps for 2 hours, I get home I feel good with no crash and sleep well at night I recommend it

I am wondering if half a can before working out will have enough effect to be worth the effort of getting it down? I don’t really consume much caffeine, and about 20 minutes after my workout I started getting hot flashes, a sick stomach, and a little light headed. Anyone else get possitive results cutting it down to half a can? I tried the Green Tea Raspberry Acai, and the taste was horrible! But I did have more energy for my workout which is a huge plus.

Well, after a restless night, I gave.this drink a try. I drank it on an empty stomach 35 min. before heading to the gym this morning. I got to say I drink two cups of coffee first thing in the morning. This drink, so far, felt like a great pick-me-up energy while running on the treadmill. I did feel a little bit light headed but it could be also for the.lack.of sleep. So far, so good.

for one personally i think i like i love this drink my stomache feels weird but i’m pretty positive its because I was doing an abb workout while i was drinking this product and I personaily think that it is safe for people to drink people that are dissing this drink shouldn’t try to make people not drink it just because they had a speciffic side effect i’m sure its because we all have different bodies and ther way they work so you are going to have a different side effect for each person im not saying my little speech here is the facts but IM pretty positive this is the reason so please stop saying the negetive because it might freak people out when its not even true.

I also love this drink. I used to see a weight loss doctor, and since I’ve lost 35 lbs, I’ve been trying to find things to help maintain my weight. Celsius is a great supplement. It gives much more energy than the commercialized energy drinks (IE. Rockstar, 5 Hour Enery, Red Bull, etc), and I still haven’t experienced any negative side effects from it. You can tell that it doesn’t contain aspertame (as the label reads), because it doesn’t have that nasty diet drink after taste, like most diet soft drinks have. I order it from their online store. I would this drink recommend to ANYONE trying to lose or maintain weight.

Use it in the morning with breakfast before a workout! You obviously arnt going to see results if you sit around and expect something to do the work for you. It will help with your workout, which will help you overall lose weight. With diet and exercise this drink can do nothing but help. I’m down 10 pounds in 2 weeks since starting celsius, but a lot more went in to it than a drink. Don’t rely on anything other than yourself to lose weight, but try this drink before your workout and you might be suprised.

I love this drink so much. How could you choose any other energy drink. 10 calories and you can burn up to 100!! It has 0 sugar, 0 high fructose corn syrup. The list goes on. I have been drinking 1 can a day for over a year. I drink only water and really try and watch what I eat so my Celsius is my treat to myself everyday. I love the Green Tea Raspberry Acai.

I don’t know how anyone can say ANYTHING negative about this drink. I pulled a 24 hour Guard shift as a US Marine, and after my shift with ONE of these (raspberry acai flavor) I was able to do 2 hours in the gym feeling VERY clear headed.

Amazing drink. The inventor is going to make a lot of money now that they are sold in the PX!!

As for the side effects, I’ve been drinking beverages with Aspartame in them since at least the early nineties (about several per week) and have NEVER experienced any of these side effects. Long-term effects, well the jury’s still out on that one, but I haven’t had these issues.

I bought this recently, and so far really love it. Great tasting. Now, I was a Red Bull Drinker prior to finding this drink, I’ve switched to Celsius. A, it is cheaper. B, it has WAY less calories. In fact, 10 total. C, It provides more energy then Red Bull ever did, for me. D, I have actually eaten less when I consume this drink. I simply don’t even feel the urge to snack. Amazing. If you drink Soda, Coffee, Juice, etc…and are Bashing this drink, get real. There are pros and cons to hmmm..everything in life? Read your Diet Drink,yes ‘DIET’. Even better research it. Soda is horrible and needs to be replaced. I LOVE CELSIUS, haven’t had one bad flavor yet and I’m flavor picky!

I have been been drinking Celsius for a few months and absolutly love it!!! It has helped me have the energy to excersise and stay up late for college homework. Iv noticed that the days i drink it i eat less and am not as hungry as the days i dont drink it. I could drink it alone for the great taste and energy it gives me but it helps me lose the 15 pounds i put on after a bad accident where i got internal damage.

Drank 1 can at 6:00 pm right before 1.5 hours of tennis. 2:32 am and I’m wide awake and feeling anxious. Can said no aspartame so figure this wouldn’t happen.Decided to come on-line to figure read what others thinks and so far looks likr 50-50. Health experts please chime in!

I am not a health expert but just have a little common sense, don’t drink it at 6 pm, do it early and exercise at least 2 hours. Don’t consume any more caffeine in the day after that and you should sleep better. Take a chamomile tea before bed if you need to relax. I hope this help

As stated “All energy drinks are bad for you” but so is pretty much everything these days. Buy organic. I personally love celsius (limit 2 cans per day) over the other energy drinks on the market. If your worried about health and ingesting bad products then eat healthy and don’t drink energy supplements…..duh! Just please don’t go on the internet bashing a product because you personally don’t like it.

I’ve been using Celsius for about 4 weeks. I drink a can right before my workout and it gives me that extra boost I need at 5:00 am. It tastes good and doesn’t make me crash after. It is important that you have some kind of mix of protein and carbs. after your workout. Always make sure to feed the body.I haven’t really noticed a weight loss, but the energy boost is pumps up my workout which kicks up the matebolism.

I just drank this drink about 10 mins ago. I do feel the effects of this drink, however it does not contain aspartame, it actually contains Sucralose which is an artificial sweetener. I will see how I do when I work out today.

I just bought this drink yesterday and the can specifically says it contains NO aspartame. You need to get your facts straight before you incorrectly start bashing a product!! I love the taste and felt no bad side effects, I fully intend on buying this product again.

The can actually says contains NO aspartame. I suggest you get your facts straight before you start bashing a product for false information!! I just bought this today and I loved the taste and have every intention of buying it again!!

i have tried almost every type of energy drink out there. i was the guinea pig at the gym. some were horrible tasting and others made me just a little crazy. i have been drinking celsius for about 4 weeks now and i must say i am impressed. it does not give me headaches or jitterts, i have noticed an inprovement in my endurance and no crash. i workout about 1.5 hrs a day and my work is very physical. so far so good

My mother is 50 years old and has been drinking this for 2-3 months now, she has type 2 diabetes and water retention so I worry when she tries things like this. But she has actually been losing weight! And she also seems to have more energy 🙂

I recently too have started drinking this, and find it very energizing (at least for me) I think it before I workout, and have energy left over to do all the other household chores.

Though I literally only had about 2 hours of sleep, I still feel great. I advise you don’t take it at night.

i agree with you on some of this syntoms but also if you are on a low calorie diet you get them too,a person need vitamins and nutrients to keep going and in a diet you loose alot of this,if a person count on a drink to get them and feel good they are going to increase this syntoms

Been hooked on Celsius for a while. I don’t drink it to lose wait, but rather enjoy the taste, and can use some rev’ing up during my day. Some of you seem to look for it to be your diet miracle. Just enjoy it, eat well and keep active. Do your homework on where to purchse it in order to get the best deal. Celsius.com often has sales, & I just printed several $2.00 coupons (off a 4 pack) from their web-site. ENJOY!

DO NOT drink this drink. I had a horrible experience with it…went for a normal bike ride and ended up in urgent care. Had blurred vision, nausea and passed out. This is not something to take lightly…it may work for people but it’s not worth the potential risk. This had NEVER happened to me previously.

I am a major coffee drinker, exercise & health freak and I felt like I was being suffocated moments after finishing my first celcius drink. It caused me to have a severe anxiety attack. I drank celcius with my light breakfast about 1hour to working out and couldn’t complete my workout. I thought I was done for. My neck is even sore from all the tension I suffered. The shortness of breath is barely wearing off but it’s been 3 days since having 1 celcius can. I do not recommend celcius. I took pedialyte and sat upright for 9 hours concentrating on breathing exercises to relief anxiety. That was my first & last celcius can.

I never had any kind of drink like Celsius but I wanted to try and I before I just read all comments…any help me as I expected because we are all different and we have our own body with some problems or without..the only way to know is to try it and very slowly. Maybe not one can but half can to start.

It’s pretty good. I drink one as I’m beginning my daily walk, does it make me walk longer and faster, I doubt it. It tastes better than Red Bull and it doesn’t give me the jitters. That’s my personal expierence.

Ok thank you, It help me get through a workout but now I feel sick, I feel hot, Sweaty, and I can barley breathe, I feel light headed even when I am sitting or lying down. I would not reccomend this drink to anyone, I am so sick. Please do not drink this for your own saftey.

I think this person is a hypocondriac. There is no Aspartame in this. Which is surprising because as was stated earlier, almost everything you read that has no sugar has aspartame. i don’t think it’s even been proven to have those side effects for sure, but we need some sweetener in our food or it would all be very bland and then you’d be complaining about the taste.

yea ur right maybe a hypo because i love this stuff it doesnt give me a thru the roof energy and i dont crash….NO aspertame in the drink and i myslf have lost 20 lbs in the last two weeks…great energy boost and makes me want to exercise i lov ethis i have my mom and all my friends drinking it..

I’ve been drinking the citrus flavored one and it’s pretty strong so I dilute it with water. I drink it right before my workouts and sometimes during. It does seem to give me a lot more energy and pep while I’m running on the treadmill. I usually can’t tolerate caffeine so although the can says it’s got quite a bit of it, I haven’t had any problems sleeping yet (drank 5 cans so far). Don’t know if it’s actually helping me burn calories but like I said,it seems to make my runs easier.

I have tried the Raspoberry Acai one a few times now. I dont get the “rush” like I used to get with redbull. I am not new to the caffeine world but wished that I noticed a little more of a “eye opener” with Celcius like it said I should. Im gonna keep trying it to see if it will kick in. If not, its less calories then Redbull and has some type of health-ness to it. And NO.. it does NOT contain Aspartame or sugar or corn syrup. The taste isnt TOO BAD.. maybe just because Im not a big fan of green tea. Maybe I’ll have to try a different flavor but i still give it a thumbs up.

I just tried Celcius for the first time, and I really like it. It gives me a little jolt of energy before my morning run, and it makes me feel better knowing that I’m burning more calories during my exercise routine just for drinking it. It’s win, win! I really recommend it, especially since it has no aspartame, no high fructose corn syrup, no sugar, no carbs, no preservatives, and very low sodium.

i started drinking celsius feb of 2009 i lost almost 50 pounds but i was also watching what i ate and hitting the gym every night.. since then i have gained some of it back because i stopped watching what i ate and going to the gym… for those of you who say this drink is not addicting well news flash it is.. i have been drinking 2-3 cans a day for over a year.. very pricey. the local store stopped shelfing the wild berry one which is the only one i like i now order it by the cases online. when i don’t have at least 1 a day i feel like a walking zombie. yeah in the beginning it gave me the gitters and so on but my body is so immuned to them i could prob drink a case of them and it would do nothing. the people at my job call it my crack juice because you never see me without one. drinking my first one of the day as i write this.. yes it gives me my energy the taste is great and well i am a celsius addict..

I’ve been drinking it for about a month now. One a day in the evenings because I work nights. I love the Ginger Ale flavor – tastes like Ginger Beer. I get a modest energy burst and I have dropped a few pounds.

…it’s fine, tastes good and does give you a energy boost without being jittery (from someone who is not new to caffine). It is also reasonably priced since I got it at the .99 store. Funny how so many reviews are written by over-the-top psychos….jeez.

I really want to try this but not because I think it’s a miracle drink that will make me lose weight without diet and exercise.. I just want a boost so my workouts are more effective and if I can burn 100 extra calories per workout even better…anyone who buys this drink because they hope to get thin quick without having to do the work necessary is simply an IDIOT.
I’ve lost 80 pounds so far by eating right and exercising.

I have been drinking Celsius for well over a year. I LOVE it.My husband, who was drinking more “charged” energy drinks, has switched to Celsius and though he does not “work out” (he does have a very physical job) he is losing weight and notices it gives him energy without making him jittery. I think everyone has to realize that it is going to affect everyone differently. Some people may be having reactions to what is IN the Celsius itself, like the different extracts, and whatnot.
In my opinion, this is a much better thing to drink than coffee (which burns my stomach), and much better than soda. But to each their own opinion, no one’s opinion is ever wrong! 🙂 Blessed Be!

Wife who is 120 lbs drank one of the Celcius 100 cans last night (she’s a frequent coffee drinher – works as an ICU Nurse) and an hour later we were at the local Emergency Dept. with her hooked to a heart monitor with a rate in the 160’s and BP in the 160/90 range and a ER Doc talking about admitting her to Cardiac ICU for caffine overdose and pushing IV meds. After 4 hours of meds and IV Fluids she was OK to release and she’s off work yet today feeling rotten. DOc says avoid this stuff he’s seen 3-4 people in the last 2 montrhs with similar symptoms. We both know this Doc (we both work Emergency med – I’m an EMT) and he’s straight up and knows his stuff – if he says its bad, its BAD.

Save yourself a really rotten experience and take your dog for a jog or take a walk.

may i ask how much all of you weigh?? being that u all had caffeine overdoses and apparently it supposed to only have caffeine from the green tea.. sorry trying to decide if i should try this. i have a friend whos on this and she lost weight n looks good.. do you think yall had od’s because of your weight?

well, i like the drink it works really good for me i guess that every body is different, and i dont care what u drink if u dont diet of exercise u wont lose weight peorid people need to get off there lazy asses and work out and diet with these products and stop thinking these products going to work by u just sitting on your ass these products just be givein u a boost in your diet but u have to work with it! duhhhhh…

I bought 3 (4) packs today of Celsius. I have to find my receipt. I only had one drink it was the Cola flavored at around 2PM and it did not agree with me. It is not 11PM and I was experiencing shortness of breath. I feel really wound up but what bothers me is the shortness of breath. Since its been 9 hrs. hopefully this wears off soon.

Actually, I tried peach mango w/ green tea. The taste could definitely be improved but it DOES NOT contain aspartame. The sweetener in this drink is sucralose, ex. Splenda. This is a bit healthier than aspartame! Although the taste is pretty crappy because of the aftertaste, I drink it because of only 1g carb., no sugar, added B vitamins and other nutritional benefits. So, if you’re wanting a healthier drink with a little boost, you should try it. If you are sensitive to caffeine or do not consume caffeine regularly, you may experience “jitters.”

I initially tried it because i got a sweet deal with coupons and basically getting it for the cost of tax. I didn’t expect much but was pleasantly surprised that it only has 1g carb and no sugar. Being on a reduced carb diet this drink fit right in. I drank it after pulling an all nighter working till 3am and returning to work at 6am for a meeting..it got me through the meeting and on into my day. There was no crash and I felt energized and had mental clarity. I am not a coffee drinker so my ‘normal’ level of caffeine in take in pretty low, but I actually like the drink. I will probably try drinking 1-2 per day. So far it is ok with me.

I love celsius! I like the mango tea one. It’s a great energy drink basically and doesn’t taste like sh!t. I hate the flavor of red bull & the others are full of sugar. Aspartame is def the downside though… But oh well I love it!

No matter how many new products they come out with there is only one sure way to lose weight and get fit and it’s not easy. You have to eat the right healthy foods and exercise. Every product out there will not work with out watching what you eat and exercising so save your money you don’t need fancy products.

I LOVE the “Cola” flavor…I think it tastes just like Diet Coke, which I love and used to drink several cans a day of. I’m not really on a diet / don’t feel I need to lose any weight, but for me, drinking Celsius is more about cutting out / substituting all the soda I normally drink and replacing it with something healthier. It’s been great so far…I haven’t had a DC in weeks!!

It’s awesome! It’s healthy, gave me energy and tastes great plus it is only ten calories so if u are trying to lose weight u can replace your high calorie juices and sodas with these! They even have cola flavor that tastes like coke! LOve it!

idk about all that i drink one can every day for a about a week and a half now ive seen weight lost even when i work at a desk all day and on top of that i used to never be able to wake up early now i cant sleep past 9:00am and feel great all day and my father is in construction and works 12 hours every day and keeps him going all day
so i say the stuff does work atleast for me

This product doesn’t work. The product info even tells you that you must diet and exercise. The so-called benefit is only 100 calories per can which would require 35 cans to produce one pound of fat lost. Bogus product using caffeine to stimulate you. It is mildly addictive, so take a pass on Celsius.

well duh, you can’t sit on ur a$% and eat pizza and lose weight. But it boosts your metabolism from all the healthy ingredients which will make u burn more calories and since it is natural I don’t see how it could be addictive.

What I got from the article was to buy Green Tea Bags, drink two cups per day and drink two to three cups per day of milk (skim is best). And exercise moderately five days per week. You will get the same results with out the side effects.

This product does work, I have taken it with exercise for about six months and have lost 70 pounds in one year. Of course a lot of exercise, and drink plenty of water and healthy food no fried foods and limit the sweets. I used to be 225 i went down to 147. Fifteen minutes after you drink celsius the energy kicks in I love to walk and I couldn’t stop until the energy died off. I got home and felt like cleaning, so even once the exersice stops you still are going no crashing! Celsius is some good stuff.

i read that you take 1 can per day,i stared with 1 and i like the taste and the boost that i got from it and did 2a day,did not feel to good and have problem sleeping,i cut back to 1 and it seems not to last as long as it use to,i been taking it for 4 months now,i knowrest that if i don’t take it the headeach do to the lack of caffeine is terrible and as soon i take it is gone within minutes

I like it too, the guy below has no idea what he is talking about. I drank my first can before going to bed tonight just to see what it tasted like. I loved the raspberry one, drank it all, at 6am, I am still awake.. Def a morning drink and not an afternoon drink for me.. I’m wide awake….